Model Comparison
Solar Open 100B (Reasoning)
vs. Solar Pro 2 (Preview) (Non-reasoning)
Comparing 2 AI models · 11 benchmarks · Upstage
Recommended Pick
UpSolar Open 100B (Reasoning)3 metric winsStrongest on: Intelligence, GPQA, HLE
Lowest Price
Solar Open 100B (Reasoning)
$0.00/1M input price
Best Reasoning
Solar Pro 2 (Preview) (Non-reasoning)
37.0 reasoning score
Blends available reasoning benchmarks
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Reasoning gap
Solar Pro 2 (Preview) (Non-reasoning) leads Solar Open 100B (Reasoning) by 7.0 points on reasoning.
Top-pick rationale
Solar Open 100B (Reasoning) wins 3 measurable categories, including Intelligence, GPQA, HLE.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Solar Open 100B (Reasoning)
Upstage
TTFT
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Time
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tok/s
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Tokens
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Cost
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Solar Pro 2 (Preview) (Non-reasoning)
Upstage
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
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Full Comparison
| Metric | Top Pick Up Solar Open 100B (Reasoning) | Up Solar Pro 2 (Preview) (Non-reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $0.00/1M |
| Output Cost | $0.00/1M | $0.00/1M |
| Specifications | ||
| Organization | Upstage | Upstage |
| Release Date | Dec 17, 2025 | May 20, 2025 |
| Performance & Speed | ||
| Throughput | — | — |
| TTFT | — | — |
| Latency | — | — |
| Composite Indices | ||
| Reasoning Score | 30.0 | 37.0 |
| Intelligence | 15.1 | 10.0 |
| Standard Benchmarks | ||
| GPQA | 65.7% | 54.4% |
| MMLU Pro | — | 72.5% |
| HLE | 9.2% | 3.8% |
| LiveCodeBench | — | 38.5% |
| MATH 500 | — | 87.1% |
| AIME (Original) | — | 29.7% |
| SciCode | 26.9% | 27.2% |
| LCR | 36.0% | — |
| IFBench | 57.7% | — |
| TAU-bench v2 | 48.2% | — |
| TerminalBench Hard | 2.3% | — |
Key Takeaways
Solar Open 100B (Reasoning) offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Solar Pro 2 (Preview) (Non-reasoning) has the strongest reasoning profile with a 37.0 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Solar Open 100B (Reasoning)
- Cost-sensitive applications
- High-volume processing
Solar Pro 2 (Preview) (Non-reasoning)
- Complex reasoning tasks
- Research & analysis
